Smoke detector



FIG. 1 is a frontal perspective view of a smoke detector according to the invention.

FIG. 2 is a rear perspective view of a smoke detector of FIG. 1.

FIG. 3 is a front view of the smoke detector of FIG. 1.

FIG. 4 is a rear view of the smoke detector of FIG. 3.

FIG. 5 is a right side view of the smoke detector of FIG. 3. The left side view (not shown) is a mirror image of the right side view.

FIG. 6 is a top view of the smoke detector of FIG. 3; and,

FIG. 7 is a bottom view of the smoke detector of FIG. 3.

The broken lines shown in FIG. 7 form no part of the claimed design. 

The ornamental design for a smoke detector, as shown and described. 